[go: up one dir, main page]

WO2016018501A8 - Crest factor reduction - Google Patents

Crest factor reduction Download PDF

Info

Publication number
WO2016018501A8
WO2016018501A8 PCT/US2015/032833 US2015032833W WO2016018501A8 WO 2016018501 A8 WO2016018501 A8 WO 2016018501A8 US 2015032833 W US2015032833 W US 2015032833W WO 2016018501 A8 WO2016018501 A8 WO 2016018501A8
Authority
WO
WIPO (PCT)
Prior art keywords
input signal
gain
generate
window
filter
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2015/032833
Other languages
French (fr)
Other versions
WO2016018501A1 (en
Inventor
Gregory C. Copeland
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Xilinx Inc
Original Assignee
Xilinx Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Xilinx Inc filed Critical Xilinx Inc
Priority to JP2017504028A priority Critical patent/JP6374596B2/en
Priority to EP15728333.4A priority patent/EP3175594B1/en
Priority to KR1020177002220A priority patent/KR102227922B1/en
Priority to CN201580041755.9A priority patent/CN106576088B/en
Publication of WO2016018501A1 publication Critical patent/WO2016018501A1/en
Publication of WO2016018501A8 publication Critical patent/WO2016018501A8/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/02—Transmitters
    • H04B1/04—Circuits
    • H04B1/0475—Circuits with means for limiting noise, interference or distortion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2614—Peak power aspects
    • H04L27/2623—Reduction thereof by clipping
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H03F1/3241—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits
    • H03F1/3258—Modifications of amplifiers to reduce non-linear distortion using predistortion circuits based on polynomial terms
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
    • H03F3/24—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers of transmitter output stages
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70706—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation with means for reducing the peak-to-average power ratio

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Algebra (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Analysis (AREA)
  • Mathematical Optimization (AREA)
  • Pure & Applied Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Measurement Of Radiation (AREA)

Abstract

A system (200) for crest factor reduction (CFR) includes a peak detector (205) configured to receive an input signal (xk); a running maximum filter (210) configured to generate a scaling factor based on a window gain (Gk) and a filter length, wherein the window gain (Gk) is based on the input signal (Xk) and a threshold value (T); a window CFR gain filter (215) configured to generate a gain correction (Fk) based on the scaling factor and the filter length; a delay (225) configured to delay the input signal (Xk) to generate a delayed input signal; a multiplier (230) configured to multiply the gain correction (Fk) by the delayed input signal to obtain a peak correction value; and an adder (235) configured to determine an output signal (yk) based on the peak correction value and the delayed input signal.
PCT/US2015/032833 2014-07-28 2015-05-28 Crest factor reduction Ceased WO2016018501A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP2017504028A JP6374596B2 (en) 2014-07-28 2015-05-28 Crest factor reduction
EP15728333.4A EP3175594B1 (en) 2014-07-28 2015-05-28 Crest factor reduction
KR1020177002220A KR102227922B1 (en) 2014-07-28 2015-05-28 Crest factor reduction
CN201580041755.9A CN106576088B (en) 2014-07-28 2015-05-28 The system and method suppressed for peak factor

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14/444,612 2014-07-28
US14/444,612 US9054928B1 (en) 2014-07-28 2014-07-28 Crest factor reduction

Publications (2)

Publication Number Publication Date
WO2016018501A1 WO2016018501A1 (en) 2016-02-04
WO2016018501A8 true WO2016018501A8 (en) 2017-01-12

Family

ID=53268022

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2015/032833 Ceased WO2016018501A1 (en) 2014-07-28 2015-05-28 Crest factor reduction

Country Status (6)

Country Link
US (1) US9054928B1 (en)
EP (1) EP3175594B1 (en)
JP (1) JP6374596B2 (en)
KR (1) KR102227922B1 (en)
CN (1) CN106576088B (en)
WO (1) WO2016018501A1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105119867A (en) * 2015-08-27 2015-12-02 三维通信股份有限公司 CFR method and communication device for multimode multi-carrier operation
US10944606B2 (en) * 2015-12-23 2021-03-09 Telefonaktiebolaget Lm Ericsson (Publ) Error scaling in crest factor reduction
US9595990B1 (en) 2016-05-18 2017-03-14 Xilinx, Inc. Circuit for and method of enabling the adaptation of an automatic gain control circuit
WO2018137175A1 (en) 2017-01-25 2018-08-02 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for crest factor reduction
US10623222B2 (en) 2018-08-30 2020-04-14 Xilinx, Inc. Vectorized peak detection for signal processing
CN109274345B (en) * 2018-11-14 2023-11-03 上海艾为电子技术股份有限公司 Signal processing method, device and system
CN113852582A (en) * 2021-09-16 2021-12-28 深圳市兆驰数码科技股份有限公司 Crest factor reduction method and system for adaptive window length and storage medium
US11770284B1 (en) 2022-05-23 2023-09-26 Meta Platforms, Inc. Per carrier scaling of a cancellation pulse of a multi-carrier signal

Family Cites Families (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5638403A (en) * 1995-04-28 1997-06-10 Motorola, Inc. Low-splatter peak-to-average signal reduction with interpolation
WO2003063346A2 (en) * 2002-01-24 2003-07-31 Koninklijke Philips Electronics N.V. A method for decreasing the dynamic range of a signal and electronic circuit
US7697591B2 (en) * 2002-08-26 2010-04-13 Texas Instruments Incorporated Crest factor reduction processor for wireless communications
US7013161B2 (en) * 2002-09-24 2006-03-14 Nortel Networks Limited Peak power reduction using windowing and filtering
AU2002364386A1 (en) * 2002-11-29 2004-06-23 Telefonaktiebolaget Lm Ericsson (Publ) Amplitude peak cancellation
DE10320917A1 (en) * 2003-05-09 2004-12-09 Infineon Technologies Ag Method for generating transmission signal with reduced crest factor for high bit rate data transmitting telecommunication systems, using multicarrier transmission with transmission signal containing section with at least one peak value
KR20050087893A (en) * 2004-02-27 2005-09-01 삼성전자주식회사 Apparatus and method for reducing peak-to-average power ratio in cdma communication system
JP4823013B2 (en) 2006-10-18 2011-11-24 株式会社日立製作所 Peak factor reduction device and baseband signal processing device
US7616710B2 (en) 2004-12-08 2009-11-10 Electronics And Telecommunications Research Institute Frequency offset estimating method and receiver employing the same
JP2006174364A (en) * 2004-12-20 2006-06-29 Fujitsu Ltd Multicarrier signal transmission apparatus, multicarrier signal reception apparatus, multicarrier signal transmission method, multicarrier signal reception method, and communication system
US7634024B2 (en) * 2005-01-31 2009-12-15 Agere Systems Inc. Adaptive peak windowing for crest factor reduction in a communication system transmitter
JP4750592B2 (en) * 2006-03-17 2011-08-17 富士通株式会社 Peak suppression method, peak suppression device, and wireless transmission device
JP4625434B2 (en) * 2006-08-10 2011-02-02 株式会社日立国際電気 Transmitter
US8369809B2 (en) * 2007-07-27 2013-02-05 Netlogic Microsystems, Inc. Crest factor reduction
US8259846B2 (en) * 2008-07-30 2012-09-04 Motorola Mobility Llc Apparatus and method for generating a multicarrier communication signal having a reduced crest factor
KR101452379B1 (en) 2008-10-28 2014-10-23 삼성전자주식회사 Apparatus and method for digital up converter in mobile communication system
US8446202B2 (en) * 2008-12-22 2013-05-21 Nec Corporation Power limiting circuit
US8265196B2 (en) * 2008-12-23 2012-09-11 Texas Instruments Incorporated Noise injection circuit and method for signal processing

Also Published As

Publication number Publication date
JP6374596B2 (en) 2018-08-15
WO2016018501A1 (en) 2016-02-04
EP3175594B1 (en) 2024-02-14
CN106576088A (en) 2017-04-19
US9054928B1 (en) 2015-06-09
EP3175594A1 (en) 2017-06-07
JP2017528047A (en) 2017-09-21
KR20170039145A (en) 2017-04-10
CN106576088B (en) 2017-12-01
KR102227922B1 (en) 2021-03-12

Similar Documents

Publication Publication Date Title
WO2016018501A8 (en) Crest factor reduction
Al-Refai et al. Maximum principle for the multi-term time-fractional diffusion equations with the Riemann–Liouville fractional derivatives
Kao et al. Exponential stability and instability of impulsive stochastic functional differential equations with Markovian switching
EP3766008A4 (en) System to determine performance based on entropy values
JP2017528047A5 (en)
WO2013190386A3 (en) Low-complexity, highly-spectrally-efficient communications
PH12015501694B1 (en) Systems and methods of performing gain control
MX387633B (en) ELECTRICAL SYSTEMS AND RELATED AUTONOMOUS CONNECTION DETECTION METHODS.
WO2015020958A3 (en) Dynamic color shading correction
WO2014027239A3 (en) Switched continuous time linear equalizer with integrated sampler
MY182051A (en) Harmonicity-dependent controlling of a harmonic filter tool
GB2539123A (en) OSNR margin monitoring for optical coherent signals
EP3092728A4 (en) Systems, methods, and devices for enhancing spectral efficiency with network-assisted advanced receivers
EP3281972A4 (en) Method for solubilizing crosslinked eva, and method for recovering resource from used solar cell by employing solubilization method
WO2016205630A3 (en) Frequency multipliers
MY185104A (en) Low delay real-to-complex conversion in overlapping filter banks for partially complex processing
MY177559A (en) Apparatus and method for improved concealment of the adaptive codebook in acelp-like concealment employing improved pitch lag estimation
WO2014153450A3 (en) Guided filter-based detail enhancement
SA517390209B1 (en) Fluid Processing System
WO2015168552A3 (en) A tubular threaded connection
EP2910982A3 (en) Photoelectric sensor
WO2014200322A3 (en) Signal conversion method and device
WO2015071771A3 (en) Apparatus, systems, and methods for removing noise from an image
WO2018057114A3 (en) Piecewise polynomial evaluation instruction
MY178529A (en) Method for estimating noise in an audio signal, noise estimator, audio encoder, audio decoder, and system for transmitting audio signals

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15728333

Country of ref document: EP

Kind code of ref document: A1

DPE1 Request for preliminary examination filed after expiration of 19th month from priority date (pct application filed from 20040101)
ENP Entry into the national phase

Ref document number: 20177002220

Country of ref document: KR

Kind code of ref document: A

Ref document number: 2017504028

Country of ref document: JP

Kind code of ref document: A

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2015728333

Country of ref document: EP

WWE Wipo information: entry into national phase

Ref document number: 2015728333

Country of ref document: EP